John 21:15-17

15When therefore they had dined, Jesus says to Simon Peter, Simon, [son] of Jonas, lovest thou me more than these? He says to him, Yea, Lord; thou knowest that I am attached to thee. He says to him, Feed my lambs.

16He says to him again a second time, Simon, [son] of Jonas, lovest thou me? He says to him, Yea, Lord; thou knowest that I am attached to thee. He says to him, Shepherd my sheep.

17He says to him the third time, Simon, [son] of Jonas, art thou attached to me? Peter was grieved because he said to him the third time, Art thou attached to me? and said to him, Lord, thou knowest all things; thou knowest that I am attached to thee. Jesus says to him, Feed my sheep.